The DR-EDID Emulator is designed to manipulate the EDID information provided to a connected HDMI source or any device connected prior to the unit in the HDMI chain. The DR-EDID is a unique self-powered inline device that can be inserted onto either end of any HDMI cable. EDID refers to a block of information that is passed from the far end of your signal chain, normally the display, to the first device or source. This EDID contains critical information about the capabilities of the connected display, including audio and video format support, HDMI feature support, etc. This device allows the installer to simply and quickly modify the information with a rotary switch to select between 16 pre-installed setting or test the EDID from any device.